JP4850205B2 - 1 can type combined heat source machine - Google Patents

Description

  The present invention includes a single can body, a first and second pair of burners provided side by side in the can body, and a first and second pair provided side by side on the top of the can body. The present invention relates to a single can type combined heat source apparatus including a heat exchanger.

  Conventionally, in this type of single can type combined heat source machine, the space between the first and second burners and the first and second heat exchangers in the can is transferred from the first burner to the first heat exchange. A partition wall that divides into a first combustion chamber leading to the furnace and a second combustion chamber leading from the second burner to the second heat exchanger, and burns only one of the burners, for example, the second burner to perform the second heat exchange During the single operation for heating the heat exchanger, it is possible to prevent a problem that the combustion gas of the second burner flows to the first heat exchanger side and the first heat exchanger is heated. In addition, an air supply chamber partitioned by a distribution plate is defined in the lower part of the can body, and combustion air from the combustion fan is formed in both the first and second combustion chambers through distribution holes formed in the distribution plate. I am trying to supply.

  Here, when the partition wall is provided in the can as described above, the partition wall is heated to a very high temperature by the combustion heat of the first and second burners, and securing the heat resistance of the partition wall becomes a problem. . Therefore, the partition wall is configured in a hollow structure having two wall plates on the first combustion chamber side and the second combustion chamber side, and a gap between the two wall plates, and the air supply chamber is formed in the gap between the two wall plates. There is also known one in which air from the air is allowed to flow (see, for example, Patent Document 1). According to this, the partition wall is effectively cooled by the air from the air supply chamber, and the heat resistance of the partition wall is ensured.

By the way, when fin clogging of one heat exchanger of the first heat exchanger and the second heat exchanger (occlusion of the gap between the heat absorption fins of the heat exchanger) occurs, the common exhaust above both the heat exchangers The exhaust gas flowing through the hood through the other heat exchanger is drawn, and the combustion gas in one combustion chamber corresponding to the one heat exchanger flows toward the partition wall side. And if it uses for a long time as it is, the cooling by the said air will become inadequate, and the damage of a partition wall will arise with the heat of combustion gas.
JP 2006-78162 A (FIGS. 5 to 7)

  This invention makes it the subject to provide the 1 can type | mold composite heat source apparatus which enabled it to detect now when the fin clogging of one heat exchanger arises in view of the above point.

  In order to solve the above-mentioned problems, the present invention provides a single can body, a first and second pair of burners provided side by side in the can body, and provided side by side on the top of the can body. The space between the first and second pair of heat exchangers, the first and second burners in the can, and the first and second heat exchangers is transferred from the first burner to the first heat. An air supply chamber provided with a partition wall that partitions the first combustion chamber leading to the exchanger and the second combustion chamber leading from the second burner to the second heat exchanger, and partitioned by a distribution plate at the lower portion of the can body 1 can type combined heat source machine which supplies combustion air from a combustion fan to both the first and second combustion chambers through distribution holes formed in the distribution plate. Has a hollow structure having a wall plate on the first combustion chamber side, a wall plate on the second combustion chamber side, and a gap between both wall plates, and an empty space from the air supply chamber is formed in the gap between both wall plates. A rod-shaped temperature sensor having a temperature sensing portion at the tip is inserted into the partition wall, and the temperature sensing portion is disposed in a space between both wall plates in a non-contact manner. To do.

  Here, when fin clogging of one heat exchanger of the first heat exchanger and the second heat exchanger occurs, the combustion gas in one combustion chamber corresponding to the one heat exchanger is biased toward the partition wall side. The temperature of the one wall plate located on the one combustion chamber side becomes higher than normal. According to the present invention, the temperature sensing part of the temperature sensor receives the radiant heat from the one wall plate, the detected temperature of the temperature sensor becomes equal to or higher than the predetermined clogging determination temperature, and the fin clogging of one heat exchanger Can be detected.

  When the temperature sensing unit is in contact with both wall plates, the temperature of one wall plate becomes high during single operation in which only one burner corresponding to one heat exchanger that has clogged fins is burned. However, due to heat sinking to the other wall plate through the temperature sensing portion, the temperature detected by the temperature sensor does not rise so much, and occurrence of fin clogging cannot be detected. On the other hand, in this invention, since a temperature sensing part is non-contact with both wall boards, this malfunction does not arise.

  When the combustion gas in one combustion chamber corresponding to the one heat exchanger flows toward the partition wall due to clogging of the fins of one heat exchanger, the temperature of the wall plate is changed in the front-rear direction of the partition wall ( It rises most at the center of the depth direction of the can body. Therefore, in the present invention, it is desirable that the temperature sensing part of the temperature sensor is located at the center part in the front-rear direction of the partition wall. According to this, the detection temperature of the temperature sensor changes with high sensitivity according to the degree of fin clogging, and the detection accuracy of fin clogging is improved.

  In order to position the temperature sensing part at the center in the front-rear direction of the partition wall, it is necessary to insert the temperature sensor deeply into the partition wall from the front side of the can body, and the position of the temperature sensing part varies in the lateral direction. It becomes easy. And a temperature sensing part may approach one of the both wall boards of a partition wall, and the detection sensitivity of the temperature rise of the other wall board may worsen. In this case, if the both wall plates of the partition wall are formed with sandwiching portions that sandwich the portion on the near side of the temperature sensing portion of the temperature sensor from both sides in the lateral direction, the temperature sensing portion is positioned laterally between the both wall plates. Can be arranged. Therefore, any temperature rise of both wall plates can be detected with high sensitivity.

  Moreover, in this invention, it is desirable to provide the convex part extended toward the arrangement | positioning part of a temperature sensing part in the outer surface of each wall board. According to this, when the combustion gas in one combustion chamber corresponding to the one heat exchanger flows toward the partition wall due to the clogging of one heat exchanger, the heat of the combustion gas is projected. Is efficiently transmitted to the temperature sensing part. Therefore, the temperature rise due to fin clogging can be detected with high sensitivity by the temperature sensor, and fin clogging detection accuracy is improved.

  Further, in the present invention, a wind shielding member may be installed in the partition wall, which is positioned below the temperature sensing part and suppresses the air flowing in the gap between the two wall plates from hitting the temperature sensing part. desirable. According to this, it is possible to prevent the detection output of the temperature sensor from becoming unstable due to the influence of air hitting the temperature sensing portion, and the detection accuracy of fin clogging is improved.

  FIG. 1 shows that a first burner 2-1 and a second burner 2-2 are arranged in a horizontal direction in a single can 1 and heated by the first burner 2-1 at the top of the can 1. 1 can type combined heat source apparatus in which a first heat exchanger 3-1 for hot water supply and a second heat exchanger 3-2 for heating heated by the second burner 2-2 are arranged side by side in the horizontal direction Is shown.

  In the lower part of the can body 1, an air supply chamber 5 partitioned by a distribution plate 4 with respect to the space in the can body 1 is defined. A combustion fan 6 connected to the air supply chamber 5 is provided, and the combustion fan 6 enters the can body 1 through a number of distribution holes 4 a formed in the distribution plate 4 from the air supply chamber 5 in the can body 2. Next air is supplied.

  Each of the burners 2-1 and 2-2 is configured by arranging a plurality of longitudinal unit burners 2 a in the lateral direction in the front-rear direction (the direction orthogonal to the plane of FIG. 1) that is the depth direction of the can 1. Each unit burner 2a includes a lower mixing tube portion 2b extending forward as shown in FIG. Then, the front part of the distribution plate 4 is offset upward to form a rising part 5a at the front part of the air supply chamber 5, and the inflow end of the mixing pipe part 2b of each unit burner 2a is exposed to this rising part 5a. ing. The front surface of the rising portion 5a of the air supply chamber 5 is closed by a gas manifold 2c. The gas manifold 2c is provided with a gas nozzle 2d facing the mixing tube portion 2b of each unit burner 2a. Thus, the fuel gas is supplied from each gas nozzle 2d to the mixing tube portion 2b of each unit burner 2a, and the primary combustion air is supplied to the mixing tube portion 2b from the rising portion 5a. Since hot water supply is required to have a larger heating capacity than heating, the number of unit burners 2a constituting each burner 2-1 and 2-2 is greater in the first burner 2-1.

  Each of the heat exchangers 3-1 and 3-2 includes a heat absorption fin 3a that is stacked in a large number with a gap in the front-rear direction, and a meandering heat absorption tube 3b that passes through the heat absorption fins 3a. Although not shown, an upstream water supply pipe and a downstream hot water discharge pipe are connected to the heat absorption pipe 3b of the first heat exchanger 3-1, and the first hot water tap at the downstream end of the hot water discharge pipe is opened. When water is passed through the heat exchanger 3-1, the first burner 2-1 is ignited, and hot water having a set temperature is discharged from the hot water tap. Although not shown, the heat absorption pipe 3b of the second heat exchanger 3-2 is connected to a heating circuit (not shown) such as floor heating via an outgoing pipe and a return pipe, and the second heat is supplied to the heating circuit. Heating is performed by circulating hot water through the exchanger 3-2.

  Further, in the can 1, a space between the first and second burners 2-1 and 2-2 and the first and second heat exchangers 3-1 and 3-2 is provided. The first combustion chamber 7-1 from the first burner 2-1 to the first heat exchanger 3-1 and the second combustion chamber 7-2 from the second burner 2-2 to the second heat exchanger 3-2. A partition wall 8 for partitioning is provided. Thus, the combustion gas in the first burner 2-1 is guided to the first heat exchanger 3-1 through the first combustion chamber 7-1, and the combustion gas in the second burner 2-2 is introduced into the second combustion chamber 7-. 2 to the second heat exchanger 3-2. The combustion gas heat-exchanged by the first and second heat exchangers 7-1 and 7-2 flows to a common exhaust hood 9 installed above both heat exchangers 3-1 and 3-2, and the exhaust hood. 9 is exhausted to the outside through an exhaust port 9a formed in 9.

  The partition wall 8 is configured in a hollow structure having two wall plates 81, 81 on the first combustion chamber 7-1 side and the second combustion chamber 7-2 side and a gap between the wall plates 81, 81. ing. Each wall plate 81 has a shoulder portion 81a that is bent outward in the lateral direction and has the same height as the upper end of the unit burner 2a, and a hanging plate portion 81b that extends downward from the outer edge of the shoulder portion 81a toward the distribution plate 4. Is formed. A wide gap between the hanging plate portions 81 b and 81 b of both wall plates 81 and 81 is communicated with the air supply chamber 5 through a communication hole 4 b formed in the distribution plate 4. Further, as shown in FIG. 4, a plurality of air blowing holes 82 are opened in the shoulder portion 81 a of each wall plate 81.

  According to this, a relatively large amount of air is supplied from the air supply chamber 5 to the gap between the hanging plate portions 81b and 81b, and a part of the air is supplied to the gap between the wall plates 81 and 81 above the shoulder portion 81a. As a result, a cooling air flow is generated inside the partition wall 8, and a cooling air flow that flows upward along the outer surface of each wall plate 81 is generated by the air blown from the air outlet 82 of the shoulder portion 81 a. . Therefore, the partition wall 8 is efficiently air-cooled from inside and outside, and the heat resistance of the partition wall 8 is ensured.

  In the present embodiment, measures are also taken to reduce combustion noise. Here, the first and second combustion chambers 7-1 and 7-2 communicate with each other through the first and second heat exchangers 3-1 and 3-2 and the partition wall 8 so as to allow ventilation. If so, air column vibrations are generated using the combustion chambers 7-1 and 7-2 as one continuous vibration space. The natural frequency F of the air column vibration is F = C / 2L where C is the speed of sound and L is the length of the vibration space. When both combustion chambers 7-1 and 7-2 become one continuous vibration space, if the lateral width of the can 1 is, for example, 31 cm, L becomes about 37 cm due to the influence of the partition wall 8. Moreover, the average temperature in the can 1 at the time of combustion will be about 170 degreeC, and C will be 435 m / sec at this time. The natural frequency F of the air column vibration generated as one continuous vibration space between the combustion chambers 7-1 and 7-2 is 590 Hz. At such a low frequency, the flame easily resonates and generates a large combustion noise.

  Therefore, in this embodiment, the side ends of the heat exchangers 3-1 and 3-2 facing the boundary between the first and second heat exchangers 3-1 and 3-2 are shown in FIG. As shown, a sealing portion 3c is provided for sealing a gap between the heat absorbing fins 3a of the heat exchangers 3-1, 3-2. Then, the two wall plates 81, 81 constituting the partition wall 8 are subjected to both heat exchanges at the upper end portions of the both wall plates 81, 81 inserted into the boundary portions of both the heat exchangers 3-1, 3-2. It is made to contact the sealing parts 3c and 3c of the containers 3-1 and 3-2. According to this, ventilation between both heat exchangers 3-1 and 3-2 is blocked by the sealing part 3c, and both heat exchangers 3-1 and 3-2 of both combustion chambers 7-1 and 7-2 are blocked. The communication between the combustion chambers 3-1 and 3-2 via the gap between the partition wall 8 and the heat exchangers 3-1 and 3-2 is also cut off. It is.

  Further, since the air blowing holes 82 are formed in the respective shoulder portions 81a and 81a of the two wall plates 81 and 81 constituting the partition wall 8, the air blowing port 82 and the both wall plates 81 and 81 are maintained as they are. Both combustion chambers 7-1 and 7-2 communicate with each other through a gap therebetween. Therefore, an intermediate partition plate 83 is provided between the wall plates 81 and 81 to divide the gap between the wall plates 81 and 81 from the distribution plate 4 to the upper end of the partition wall 8 in the lateral direction. As a result, the communication between the combustion chambers 7-1 and 7-2 via the air outlet 82 and the gap between the wall plates 81 and 81 is also cut off. In addition, joining flange parts 81d and 81d are formed at the uppermost ends of both wall plates 81 and 81, with the bent parts 81c and 81c extending inward in the lateral direction. The middle partition plate 83 is joined so as to sandwich the upper end thereof. Then, as shown in FIG. 5, a vent hole 84 is formed in the bent portions 81 c and 81 c at the upper ends of the both wall plates 81 and 81, and the air that has flowed into the gap between the both wall plates 81 and 81 passes through the vent hole 84. It flows out to the boundary part of both heat exchangers 3-1 and 3-2.

  When the communication between the combustion chambers 7-1 and 7-2 is interrupted as described above, the generation of air column vibrations that make both the combustion chambers 7-1 and 7-2 one continuous vibration space is prevented. Column vibration is generated individually in each of the combustion chambers 7-1 and 7-2, and the natural frequency of the air column vibration is increased. For example, when the width of the first combustion chamber 7-1 is 23 cm and the width of the second combustion chamber 7-2 is 7 cm, the natural frequency of the air column vibration generated in each of the combustion chambers 7-1 and 7-2 is The first combustion chamber 7-1 has a frequency of 950 Hz, and the second combustion chamber 7-2 has a frequency of 3100 Hz. When the natural frequency reaches such a high value, the flame hardly resonates and combustion noise is reduced.

  By the way, when fin clogging of one heat exchanger of the first heat exchanger 3-1 and the second heat exchanger 3-2 (closing of the gap between the heat absorbing fins 3 a) occurs, both the heat exchangers 3-1. , 3-2 is drawn by the exhaust flow flowing through the other heat exchanger to the common exhaust hood 9 above 3-2, and the combustion gas in one combustion chamber corresponding to one heat exchanger becomes the partition wall 8 side It is biased to flow. Even if the burner corresponding to the other heat exchanger is not burned, the combustion gas in one combustion chamber is drawn by the air flow flowing from the air supply chamber 5 to the exhaust hood 9 via the other heat exchanger. Flows unevenly toward the partition wall 8 side. And if it uses for a long time as it is, the cooling by the said air will become inadequate, and the partition wall 8 will be damaged with the heat of combustion gas.

  Therefore, in the present embodiment, the rod-shaped temperature sensor 10 having the temperature sensing part 10 a at the tip is inserted into the partition wall 8 from the front side of the can body 1. As shown in FIG. 3, the fixing portion 10 b on the tail end side of the temperature sensor 10 is fixed to the front surface of the can body 1 with the temperature sensing portion 10 a positioned at the center in the front-rear direction of the partition wall 8. . The temperature sensor 10 includes a temperature sensing element 10a at the tip of a pipe-shaped sensor body 10c and a temperature sensing element such as a thermistor or a thermocouple. The lead wire 10d connected to the temperature sensing element is a sensor body. 10c is inserted.

  On both wall plates 81, 81 of the partition wall 8, a bulging portion 85 bulging outward in the lateral direction is formed at the insertion portion of the temperature sensor 10. And by forming the bulging part 85, as shown in FIG. 6, the temperature sensitive part 10a is arrange | positioned so that both wall board 81,81 may not be contacted in the space | gap between both wall board 81,81.

  If the temperature sensor 10 is not in contact with both wall plates 81, 81 over its entire length, the tip of the temperature sensor 10 can be sensed only by fixing the fixing portion 10 b at the tail end of the temperature sensor 10 to the can 1. The position of the warm part 10a varies laterally. Therefore, a bulging portion 85 is formed so that a flat portion located on the front side of the temperature sensing portion 10a remains in the insertion portion of the temperature sensor 10 on both wall plates 81, 81, and the temperature sensor 10 is illustrated by this flat portion. As shown in FIG. 7, a sandwiching portion 86 that is sandwiched from both sides in the lateral direction is configured. According to this, the temperature sensing part 10a is positioned in the lateral direction between the two wall plates 81, 81, and the position of the temperature sensing part 10a does not vary laterally.

  Further, the partition plate 83 is formed with a notch 83a that serves as a relief for the temperature sensor 10. Further, as shown in FIG. 6, a wind shielding member 87 located below the temperature sensing portion 10 a is attached to the partition plate 83 so that the air flowing in the gap between the wall plates 81 and 81 strikes the temperature sensing portion 10 a. Can be suppressed.

  One of the first heat exchanger 3-1 and the second heat exchanger 3-2, for example, the fin clogging of the second heat exchanger 3-2 occurs, and the combustion gas in the second combustion chamber 7-2 If the flow is biased toward the partition wall 8, the temperature of the wall plate 81 located on the second combustion chamber 7-2 side becomes higher than normal. Therefore, the temperature sensing part 10a of the temperature sensor 10 receives the radiant heat from the wall plate 81, the detected temperature of the temperature sensor 10 becomes equal to or higher than the predetermined clogging determination temperature, and the occurrence of fin clogging can be detected. When fin clogging is detected, the occurrence of fin clogging is notified to prompt repair, and the rotational speed of the combustion fan 6 is corrected to increase. According to this, the amount of cooling air is increased, the temperature of the wall plate 81 is lowered, and the life is extended. Thereafter, when fin clogging is detected again, an error is stopped.

  If the temperature sensing part 10a is in contact with both wall plates 81, 81 of the partition wall 8, only the second burner 2-2 for the second heat exchanger 3-2 that has clogged fins is burned. During operation, even if the temperature of the wall plate 81 on the second combustion chamber 7-2 side becomes high, heat is drawn to the wall plate 81 on the first combustion chamber 7-1 side through the temperature sensing portion 10a. The detection temperature of the temperature sensor 10 does not rise so much, and the occurrence of fin clogging cannot be detected. On the other hand, in this embodiment, since the temperature sensing unit 10a is not in contact with both wall plates 81, 81, such a problem does not occur.

  Further, in order to improve the detection accuracy of fin clogging, it is desirable to make the rate of change of the temperature detected by the temperature sensor 10 as large as possible due to the change in the degree of fin clogging (fin closing rate). Here, the change in the detected temperature accompanying the change in the fin blockage rate is as shown by the a line in FIG. 8 when the temperature sensing portion 10a is located at the front portion of the partition wall 8, and this embodiment When the temperature sensing part 10a is located at the center in the front-rear direction of the partition wall 8 as shown in FIG. As is clear from this, if the temperature sensing portion 10a is positioned at the center in the front-rear direction of the partition wall 8, the rate of change in the detected temperature accompanying the change in the fin blockage rate increases. That is, the detection temperature changes with high sensitivity due to the change in the fin blockage rate, and the detection accuracy of fin clogging is improved.

  Further, when the position of the temperature sensing part 10a varies in the lateral direction and the temperature sensing part 10a approaches one of the two wall plates 81, 81 of the partition wall 8, the detection sensitivity of the temperature rise of the other wall plate 81 becomes worse. . In the present embodiment, the temperature sensor 10 a is positioned at the center in the lateral direction between the wall plates 81, 81 by sandwiching the temperature sensor 10 from both sides in the lateral direction with the clamping portions 86 formed on the wall plates 81, 81. . Therefore, any temperature rise of both wall plates 81, 81 can be detected with high sensitivity. That is, any fin clogging of the first heat exchanger 3-1 and the second heat exchanger 3-2 can be detected with high accuracy.

  Further, in the present embodiment, the wind shield member 87 suppresses the air flowing in the gap between the wall plates 81, 81 from hitting the temperature sensing portion 10a. Therefore, it is possible to prevent the detection output of the temperature sensor 10 from becoming unstable due to the influence of air hitting the temperature sensing unit 10a, and the detection accuracy of fin clogging is further improved.

  By the way, in the said embodiment, although the outer surface of the part which faces each combustion chamber 7-1, 7-2 of each wall board 81 is formed in the flat surface except the bulging part 85, FIG. As shown in the second embodiment, a convex portion 88 extending toward the arrangement portion of the temperature sensing portion 10 a may be provided on the outer surface of each wall plate 81. According to this, the combustion gas in one combustion chamber corresponding to the one heat exchanger due to fin clogging of one heat exchanger of the first heat exchanger 3-1 and the second heat exchanger 3-2. When the gas flows toward the partition wall 8 side, the convex portion 88 is quickly heated by the combustion gas. And the heat of combustion gas is efficiently transmitted to the temperature sensing part 10a via the convex part 88. FIG. Therefore, a temperature rise due to fin clogging can be detected with high sensitivity by the temperature sensor 10, and fin clogging detection accuracy is improved.

  In addition, although the convex part 88 is formed by the press molding of the wall board 81, it is also possible to weld the board | plate material to the outer surface of the wall board 81, and to form the convex part 88. FIG. Further, in the second embodiment, the convex portion 88 is formed in a mountain shape that is wide in the front-rear direction on the lower side and extends upward while narrowing the width in the front-rear direction toward the temperature-sensitive portion 10a, but is not limited thereto. Absent. For example, a plurality of convex portions extending from a plurality of lower front and rear locations toward the arrangement portion of the temperature sensing unit 10 may be provided on the outer surface of each wall plate 81.

  As mentioned above, although embodiment which applied this invention to the 1 can type | mold composite heat source machine which has the 1st heat exchanger 3-1 for hot-water supply and the 2nd heat exchanger 3-2 for heating was described, 2nd heat When the exchanger 3-2 is a heat exchanger for retreating a bath in which a bath endothermic pipe that circulates hot water of the bath is passed through the endothermic fin, or the endothermic fin and the endothermic pipe are passed through In the case of a heat exchanger for heating and bathing, the first heat exchanger 3-1 is also used for hot water and bathing in which the heat-absorbing fin penetrates the hot-water heat-absorbing tube and the bath heat-absorbing tube. The present invention can be similarly applied to a case where the heat exchanger is a heat exchanger or a heat exchanger other than for hot water supply.

  Moreover, in the said embodiment, although the 1st heat exchanger 3-1 and the 2nd heat exchanger 3-2 are isolate | separated completely, both the 1st and 2nd heat exchanger 3-1 and 3-2. The endothermic fins 3a, 3a can be constituted by continuous common fins. Moreover, in the said embodiment, although the partition plate 83 is provided in the partition wall 8, the partition plate 83 can also be abbreviate | omitted.

The typical cutting front view showing composition of a 1st embodiment of the present invention heat source machine. FIG. 2 is a cut side view taken along line II-II in FIG. 1. The cut side view cut | disconnected by the III-III line | wire of FIG. The perspective view which shows the partition wall of 1st Embodiment. The enlarged cut top view cut | disconnected by the VV line | wire of FIG. Sectional drawing cut | disconnected by the VI-VI line of FIG. Sectional drawing cut | disconnected by the VII-VII line of FIG. The graph which shows the relationship between a fin obstruction | occlusion rate and the detection temperature of a temperature sensor. The cut side view equivalent to FIG. 3 of 2nd Embodiment. Sectional drawing cut | disconnected by the XX line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Can body, 2-1 ... 1st burner, 2-2 ... 2nd burner, 3-1 ... 1st heat exchanger, 3-2 ... 2nd heat exchanger, 4 ... Distribution board, 4a ... Distribution hole DESCRIPTION OF SYMBOLS 5 ... Supply chamber, 6 ... Combustion fan, 7-1 ... 1st combustion chamber, 7-2 ... 2nd combustion chamber, 8 ... Partition wall, 81 ... Wall board, 86 ... Nipping part, 87 ... Wind-shielding member , 88 ... convex part, 10 ... temperature sensor, 10a ... temperature sensing part.

Claims (5)

A single can body, a first and second pair of burners provided side by side in the can body, and a first and second pair of heat exchangers provided side by side on the top of the can body And a first combustion chamber and a second burner extending from the first burner to the first heat exchanger in a space between the first and second burners and the first and second heat exchangers in the can. And a second combustion chamber extending from the first heat exchanger to the second heat exchanger, and defining a supply chamber partitioned by a distribution plate at a lower portion of the can body, and combustion air from the combustion fan Is a one-can type combined heat source machine that supplies the first and second combustion chambers through distribution holes formed in the distribution plate,
The partition wall is formed in a hollow structure having two wall plates on the first combustion chamber side and the second combustion chamber side, and a gap between both wall plates, and the gap between the two wall plates is separated from the air supply chamber. In the one that flows air,
A single can type composite, wherein a rod-shaped temperature sensor having a temperature sensing portion at the tip is inserted into the partition wall, and the temperature sensing portion is disposed in a space between both wall plates in a non-contact manner. Heat source machine.   2. The single can type combined heat source apparatus according to claim 1, wherein the temperature sensing portion of the temperature sensor is located in a central portion of the partition wall in the front-rear direction with the depth direction of the can body as the front-rear direction.   3. The single can type combined heat source apparatus according to claim 2, wherein a sandwiching portion is formed on the both wall plates of the partition wall so as to sandwich a portion on the near side of the temperature sensing portion of the temperature sensor from both lateral sides. 1 can type combined heat source machine.   4. The single can type combined heat source apparatus according to claim 1, wherein a convex portion extending toward an arrangement portion of the temperature sensing portion is provided on an outer surface of each of the wall plates.   A wind shielding member is provided in the partition wall, which is positioned below the temperature sensing portion and suppresses air flowing in a gap between the two wall plates from hitting the temperature sensing portion. Item 5. The single can type combined heat source machine according to any one of items 1 to 4.

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